μ_o represents the permeability of free space and is a constant value used in physics equations related to magnetism. It quantifies how easily magnetic fields can pass through empty space.
Related terms
Permittivity: The measure of how easily electric fields can pass through materials.
Magnetic Flux Density (B): The amount of magnetic field passing through an area perpendicularly.
Gauss's Law for Magnetism: A law stating that there are no isolated north or south poles; every magnet has both poles.